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Stainless Steel Phillips Drilling Screws for Joining Wood to Metal
18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. They speed installation by drilling, tapping, and fastening wood and metal in a single operation. Length is measured from the top of the head.
Screws with cutting wings drill a slightly larger hole in the wood to allow for expansion. The wings break off when they contact metal, so the screw can tap the remainder of the hole.
Head | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Screw Features | Drill Point Size | Drill Tip Lg. | Dia. | Ht. | Drive Size | Thread Size  | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
Galvanic Barrier Coated 18-8 Stainless Steel | |||||||||||||
No. 12 | |||||||||||||
| 2 13/16" | Cutting Wings | No. 5 | 45/64" | 0.415" | 0.2" | No. 3 | __ | 14 | Partially Threaded | 1 1/2" | 5 | 000000000 | 00000 |
1/4" | |||||||||||||
| 2 13/16" | Cutting Wings | No. 5 | 45/64" | 0.48" | 0.2" | No. 3 | 1/4"-20 | __ | Partially Threaded | 1 1/2" | 5 | 000000000 | 00000 |